Honda Civic. Manual — part 569

Fig. 7: Identifying Crankshaft Bore Code Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Main Journal Code Location

2. The main journal codes are stamped on the crankshaft.

Fig. 8: Identifying Main Journal Code Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Use the crank bore codes and crank journal codes to select the appropriate

replacement bearings from the following table.

NOTE:

Color code is on the edge of the bearing.

When using bearing halves of different colors, it
does not matter which color is used in the top or
bottom.

2008 Honda Civic GX

2006-08 ENGINE Engine Block - Civic (Except Hybrid)

CONNECTING ROD BEARING REPLACEMENT

Rod Bearing Clearance Inspection

1. Remove the oil pan (see OIL PAN REMOVAL ).
2. Remove the oil screen and baffle plate (see step 8 ).
3. Remove the connecting rod cap and bearing half.
4. Clean the crankshaft rod journal and bearing half with a clean shop towel.
5. Place plastigage across the rod journal.
6. Reinstall the bearing half and cap, and torque the bolts to 20 N.m (2.0 kgf.m,

14 lbf.ft) + 90 degrees using a commercially available torque angle gauge.

7. Remove the rod cap and bearing half, and measure the widest part of the

plastigage.

Connecting Rod Bearing-to-Journal Oil Clearance

Fig. 9: Identifying Crank Bore Codes And Crank
Journal Codes Reference
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE:

Do not rotate the crankshaft during inspection.

2008 Honda Civic GX

2006-08 ENGINE Engine Block - Civic (Except Hybrid)

Standard (New): 0.024-0.042 mm (0.0009-0.0017 in.)

Service Limit: 0.055 mm (0.0022 in.)

Fig. 10: Measuring Widest Part Of Plastigage
Courtesy of AMERICAN HONDA MOTOR CO., INC.

8. If the plastigage measures too wide or too narrow, remove the upper half of the

bearing, install a new, complete bearing with the same color code(s), and
recheck the clearance. Do not file, shim, or scrape the bearings or the caps to
adjust clearance.

9. If the plastigage shows the clearance is still incorrect, try the next larger or

smaller bearing (the color listed above or below the current one), and check
clearance again. If the proper clearance cannot be obtained by using the
appropriate larger or smaller bearing, replace the crankshaft, and start over.

Rod Bearing Selection

1. Inspect each connecting rod for cracks and heat damage.

Connecting Rod Big End Bore Code Locations

2. Each rod has a tolerance range from 0 to 0.024 mm (0.0009 in.), in 0.006 mm

(0.0002 in.) increments, depending on the size of its big end bore. It is then
stamped with a number or bar (1, 2, 3 or 4/I, II, III, or MM) indicating the
range. You may find any combination of numbers and bars in any engine. (Half

2008 Honda Civic GX

2006-08 ENGINE Engine Block - Civic (Except Hybrid)

the number or bar is stamped on the bearing cap, the other half is on the rod.)

If you can't read the code because of an accumulation of oil and varnish, do not
scrub it with a wire brush or scraper. Clean it only with solvent or detergent.

Normal Bore Size: 48.0 mm (1.89 in.)

Fig. 11: Identifying Connecting Rod Big End Bore Code Locations
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Connecting Rod Journal Code Location

3. The connecting rod journal codes are stamped on the crankshaft.

Fig. 12: Identifying Connecting Rod Journal Code Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Use the big end bore codes and rod journal codes to select the appropriate

2008 Honda Civic GX

2006-08 ENGINE Engine Block - Civic (Except Hybrid)